The Laser Proximity Fuse Distance Algorithm

In recent years, laser proximity fuze technology is developing rapidly. In the proximity fuze technology, the range accuracy is an important performance index to make sure that the missiles can control burst and the bombs can make maximum destruction. Laser proximity fuze requires to fix distance of the target from a few meters to 10 meters away in high-speed motion and to improve detection capabilities of the target, besides, it is required to resist all kinds of interference in order to enhance hit points by the weapons. In this context, first, the precision of the fixed distance by pulsing laser proximity fuze is enhanced, and then, the algorithm of fixing location by laser proximity fuze is researched through theoretical analysis and experimental verification.In respect of theory design, first, four mechanism of fixing distance is analyzed and compared by dynamics laser to get general principles of selection for different dynamics fixing distance mechanism. The Laser emission signal, the spatial and temporal distribution of echo signal, the reflective properties of different targets and echo waveform broadening and distortion is analyzed theoretically, and the mathematical model of a transmission signal and the echo signals in different conditions is established to provide a theoretical basis to design algorithm.In respect of technical,first, the traditional approach of simulation is analyzed, and then algorithms of several commonly used methods of digital processing at present is stimulated,and error statistics of each algorithm is done. Statistical results are compared and analyzed to design pulsing laser ranging technology by the method of using mexh wavelet transform, and test is made on the development board while the measuring results and actual results are the same.Finally, the theory is validated on the hardware platform, and measuring results is demarcated. Experimental data show that the technology can fix the precise distance of targets from a few meters to 10 meters away in high-speed motion, and reduce noise interference to enhance the speed and accuracy of laser ranging.